Stator punching sheet, stator with stator punching sheet, motor and electrical equipment

Abstract

The invention discloses a stator punching sheet, a stator with the stator punching sheet, a motor and electrical equipment. The stator punching sheet comprises a stator yoke part, first stator tooth parts and second stator toothparts; each first stator tooth part comprises a first tooth body and a first tooth crown, the first tooth crowns are connected with the first tooth bodies, and the first tooth bodies are connected with the stator yoke part; and each second stator tooth part comprises a second tooth body and a second tooth crown, the second tooth crowns are connected with the second tooth bodies, the second tooth bodies are connected with the stator yoke part, the plurality of first stator tooth parts and the plurality of second stator tooth parts are alternately arranged along the circumferential direction of the stator yoke part, and the shape and / or size of the first tooth crown of the at least one first stator tooth part is different from the shape and / or size of the second tooth crown of the at least one second stator tooth part. According to the stator punching sheet provided by the embodiment of the invention, the equivalent air gap of the motor can be reduced, and the output torque of the motor can be improved.

Description

technical field [0001] The invention relates to the field of motors, in particular to a stator punch, and also relates to a stator with the stator punch, a motor and electrical equipment. Background technique [0002] Since the single-phase brushless DC motor in the related art has only one-phase winding, there is a dead point, and the starting performance of the motor is poor. In order to solve this problem, a gradual air gap structure is adopted, that is, the radius from the stator pole or the rotor pole to the center of the stator gradually decreases or increases along the rotor rotation direction. Although this structure can shift the center line of the stator and rotor magnetic poles to avoid the dead point position, it makes the equivalent air gap of the motor large and the output torque decreases. Contents of the invention [0003] The present invention aims to solve one of the technical problems in the related art at least to a certain extent. To this end, the pr...

AI Technical Summary

Problems solved by technology

Although this structure can offset the center line of the stator and rotor magnetic poles and avoid the dead point position, the equivalent air gap of the motor is large and the output torque is reduced.

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